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Science Forces Flashcards > Forces > Flashcards

Forces Flashcards

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1
Q

What is a force?

A

A push, pull or twist. When applied to an object it’s caused to change speed, move, change direction or stop.

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2
Q

What does deform mean?

A

To change shape.

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3
Q

What is drag force?

A

The force acting on an object moving through air or water causing it to slow down.

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4
Q

What does field mean?

A

A region where something feels a force.

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5
Q

What is a kilogram?

A

A unit of mass, symbol kg.

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6
Q

What is mass?

A

The amount of matter (stuff) a thing is made up of.

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7
Q

What is friction?

A

The force between two surfaces sliding over one another, that causes them to heat up and wear.

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8
Q

What is weight?

A

The force that pulls objects towards the centre of the earth.

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9
Q

What is a Newton?

A

A unit of force, symbol N.

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10
Q

What is tension?

A

A stretching force.

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11
Q

What does streamlined mean?

A

Shaped to reduce resistance to motion from air or water.

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12
Q

The thicker the liquid the greater the upthrust? True or false?

A

True!

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13
Q

Objects are lighter in water? True or false?

A

True!

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14
Q

What is density?

A

Volume

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15
Q

What is air resistance?

A

Going against air.

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16
Q

1 kg mass is pulled down by a force of 10N. True or false?

A

True!

17
Q

What are the main characteristics of a streamlined shape?

A

Rounded front, slowly tapering tale and smooth shape with no projections.

18
Q

What is a line of best fit?

A

A line that goes close to or through points in a graph, missing out anomalies.

19
Q

What is an anomaly?

A

An anomaly in a result that doesn’t fit the pattern or the trend of the other results.

20
Q

How do you calculate speed?

A

Divide distance by time.

21
Q

How do you calculate distance?

A

Times speed by time.

22
Q

How do you calculate time?

A

Divide distance by speed.

23
Q

What does a 1kg mass weigh in Newtons?

A

10N.

24
Q

What does a 100g mass weigh in Newtons?

A

1N.

25
Q

What does extension mean?

A

The amount by which an object gets longer when a force is applied.

26
Q

What is a non contact force?

A

A magnetic, electrostatic or gravitational force that acts between objects not in contact.

27
Q

What’s a resistive force?

A

A force that acts to slow down a moving object.

28
Q

What is an unbalanced force?

A

Opposing forces on an object that are unequal.

29
Q

What is a balanced force?

A

Forces acting on an object that are the same size but act in opposite directions.

30
Q

What is air/ water resistance?

A

The force on an object moving through air/ water that causes it to slow down (also known as drag).

Science Forces Flashcards (1 decks)

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